Allen-Bradley 1746-OW4 4-Channel Relay Output Module

Allen-Bradley 1746-OW4 is a four-channel relay output module for the SLC 500 family, delivering four Form A (normally open) relay contacts that are independently isolated to switch separate loads from a single module. It is an AC/DC relay output module, supporting operating voltages from 5 to 265 VAC (47–63 Hz) or 5 to 125 V DC, enabling mixed AC and DC switching in the same I/O rack. Each channel provides a discrete relay contact that switches load power supplied externally (the module does not source load power itself) and it mounts in a 1746 I/O rack alongside other AB SLC 500 modules. Typical ratings documented for 1746-OW4 include a maximum contact voltage of up to 1800 VAC and per-channel continuous current up to 0.75 A (make) with 0.22 A (break); DC ratings are defined within the same family data.